OKX announced it will list Concrete (CT) for spot trading against USDT. Deposits for CT will open at Sep 30, 2026 04:00 UTC, followed by call auction from 9:00 to 10:00 UTC, and spot trading at 10:00 UTC on Sep 30, 2026. Withdrawals will open at 12:00 UTC. Concrete is described as an institutional-grade on-chain asset management platform aimed at making decentralized finance more accessible, efficient, and transparent.